Black Knapweed

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Plant Bio

Common Name:Black Knapweed
Family:Asteraceae
Genus:Centaurea
Species:nigra
Classification/Rank:Extremely Invasive
Method of Transportation:
Habitat/Range:

Description

• perennial herb that grows 0.1-0.8m tall • stems are erect, branched, and rough hairy • leaves are toothed, or shallowly lobed to entire, and are hairy above and below; lower leaves are long stalked and become unstalked with increasing plant height • flowers are disk shaped, purple, and found solitarily at the end of upper branches

News

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posted: July 14, 2017
Attend the BC Northern Exhibition for free!

The Northwest Invasive Plant Council will have an Information Booth at this year's BCNE, and we're looking for volunteers to help out.

You...

posted: July 7, 2017
Invaders! Invasive Species in BC

Watch this short video from the Province about invasive species and their impacts on BC - Invaders! Invasive Species in BC